A METHOD FOR USING A DIGITAL TELEPHONE CHANNEL FOR TRANSMISSION OF INFORMATION DURING THE CALL,申请号PL19860260731-传众专利搜索

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发明名称	A METHOD FOR USING A DIGITAL TELEPHONE CHANNEL FOR TRANSMISSION OF INFORMATION DURING THE CALL
摘要
申请公布号	PL154128(B1)	申请公布日期	1991.07.31
申请号	PL19860260731	申请日期	1986.07.18
申请人		发明人
分类号	H04L;H04L5/00;H04M;(IPC1-7):H04L5/00	主分类号	H04L
代理机构		代理人
主权项
地址

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